【作者】 雷俊杰；

【导师】 章青；

【作者基本信息】 天津大学 ， 机械电子工程， 2010， 硕士

【摘要】 随着我国各项建设事业的高速发展,各种结构物的建造朝着大型化、重型化和模块化方向发展。大型结构物装船是海洋平台、导管架和港口塔吊等大型结构物建造项目实施过程的重要环节。大型结构物装船主要有吊装装船、滑移装船和小车装船三种方式。小车装船具有载重量大、装船效率高、操作简单、环境适应性强等优点,该技术在国外应用广泛但处于保密状态,国内的研究尚处于起步阶段。在小车装船过程中,如何通过调载控制驳船的姿态,保证栈桥和驳船的安全性是急需解决的问题。本文以小车装船方式为研究对象,分析研究大型结构物小车装船过程中的栈桥受力和调载建模。本文主要研究内容包括:1.设计栈桥的详细结构并提出合理的栈桥布置方案,应用APDL参数化语言建立码头和栈桥的面-面接触有限元模型,应用ANSYS分析码头和栈桥在装船极限工况中的应力和变形情况。2.应用Solidworks建立栈桥的三维模型,选用一阶优化方法对栈桥板厚和栈桥筋板数量进行有限元优化,应用ANSYS分析栈桥优化后在装船极限工况中的应力和变形情况。3.以驳船静力学理论为基础,分析小车停在甲板任意位置和小车纵向移动对驳船浮性和稳性的影响。考虑驳船初始状态、实时潮位变化和小车载荷分配三种环境因素,建立驳船调载模型并分析其计算方法。4.以镍矿项目3M101模块小车装船为例,以“滨海308”驳船为调载对象,建立调载仿真模型,应用Matlab计算驳船调载方案。综上所述,本文主要研究了大型结构物小车装船的关键问题:栈桥受力和调载建模。本文的研究以镍矿项目为背景,具有重要的工程应用价值,对于类似工程的实施也有重要的指导意义。更多还原

【Abstract】 With the rapid development of various kinds of construction projects in China, large-scale structure is constructed towards the direction of large-scale, heavy-duty and modularization. Shipment is an important step of the construction project of large-scale structure including port crane, offshore oil platform, jacket and so on. Now, there are three shipment means including hoisting shipment, slippage shipment and platform vehicle shipment. Platform vehicle shipment has some advantages, such as big loading capacity, high efficiency, simple operation, low environmental requirements and so on. At present this technology is widely used abroad but in secret, but its research is fresh at home. It is a burning question that how to control the barge and calculate ballast water regulation to ensure safety of steel bridge and barge during the process of shipment. Taking platform vehicle shipment as a study target, the force of steel bridge and ballast water regulation model have been analyzed and researched during platform vehicle shipment of a large-scale structure. The main research of this paper can be included as follows:1. The detailed structure of bridge and a reasonable layout scheme of bridge have been designed. A surface to surface contact finite element model of pier and bridge has been created in APDL language, the stress and deformation of bridge and pier under extreme shipment conditions have been analyzed applying ANSYS.2. Three-dimensional model of bridge has been created applying Solidworks, bridge thicknesses and number of rib plate of bridge have been optimized by the first-order method in the optimized design module of ANSYS, the stress and deformation of the optimized bridge and pier under extreme shipment conditions have been analyzed by ANSYS.3. Based on barge statics theory, buoyancy and stability of barge have been analyzed when platform vehicles stop in any position and longitudinally move on deck of barge. Ballast water regulation model has been established, considering three environmental factors including initial state of barge, changes of the tide level and load distribution.4. Taking nickel project for example, and taking“Binhai 308”barge as a regulation target, ballast water regulation simulation model of 3M101 moduler has been established, and a ballast water regulation scheme has been calculated applying Matlab software.From the above, two key issues of platform vehicle shipment have been studied, which are the force of steel bridge and ballast water regulation model. Based on the background of nickel project, this study has some important engineering values and guiding significance for the implementation of nickel project or other similar projects.更多还原